SDR UALA2011091204906

Service difficulty report · Carbon Seal · Boeing 757222

Difficulty date: September 9, 2011
Submitted: October 7, 2011
Operation: Air carrier
Aircraft: N596UA
Make and model: Boeing 757222
Aircraft serial: 28749
Aircraft time: 53,107 hours, 14,854 cycles
Engine: Pwa PW2037
Engine time: 69,826 hours, 23,746 cycles
System (JASC): 7261 · Turbine Engine Oil System
Part: Carbon Seal
Condition: Leaking
Location: Nr 1 Engine
Part time: 69,826 hours, 23,746 cycles
Stage of operation: IN
How discovered: O
Nature of condition: K
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR 1 ENG HIGH OIL CONSUMPTION EXCEEDS LIMIT. HOC TROUBLESHOOTING STARTS ON PAGE 117. ACP HOC TROUBLESHOOTING REF MM 71-05-00. OBSERVED RUNNING OIL LEAK FROM BREATHER PORT DURING ENG RUN. ALL OTHER ACCESSORY DRAINS CHECKED OK. REPLACED DE-OILER CARBON SEAL PER MM. RAN ENG NO LEAKS.